What mass of Na is needed to react with H2O to liberate 165 L H2 gas at STP, accord- ing to the equation below? 2 Na(s) + 2 H2O(l) - H2(g) + 2NaOH(aq)

Answer in units of g. Your answer must be within + 3.0%​

All forces cause motion? true or false

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.